Level of amputation following failed arterial reconstruction compared to primary amputation--a meta-analysis

Area of Science:

• Vascular Surgery
• Amputation Surgery
• Outcomes Research

Background:

• Vascular reconstruction aims to preserve limbs, but failure necessitates amputation.
• The level of amputation after failed reconstruction versus primary amputation is a critical factor in patient outcomes.
• Understanding differences in amputation levels and complication rates is essential for surgical decision-making.

Purpose of the Study:

• To compare amputation levels after failed vascular reconstruction (PRVA) with those of primary amputations (PA).
• To assess the rate of conversion from transtibial to transfemoral amputation due to stump complications in both groups.
• To evaluate the success rate of transtibial amputations in PRVA versus PA.

Main Methods:

• A comprehensive literature search of Medline from 1975 to 1996 was conducted.
• Meta-analysis techniques were employed to synthesize data from relevant studies.
• The study specifically analyzed the odds ratio of transtibial to transfemoral amputations and conversion rates.

Main Results:

• The odds ratio of transtibial to transfemoral amputations was comparable between PRVA (1.41) and PA (1.37), with no statistically significant difference (p = 0.65).
• The rate of conversion from transtibial to transfemoral amputation due to stump complications was significantly higher in PRVA (23%) compared to PA (12.4%) (p < 0.01).
• The success rate for transtibial amputation was approximately 58% in both PRVA and PA groups.

Conclusions:

• No significant difference was found in the transtibial to transfemoral amputation ratio between PRVA and PA.
• The risk of requiring a higher-level amputation (conversion) is substantially increased after failed vascular reconstruction.
• The findings support an aggressive approach to vascular reconstruction, given the similar success rates for transtibial amputations in both scenarios.